Originally Posted by The EX1
Dyes don't cause gunk to build up in loops. Dyes get blamed because it "dyes" the contaminants that are actually causing the build up making it look like the dye is to blame. Plasticizer leaching from poor quality soft tubing is what causes the most common complaints of gunk buildup. Its the same reason why some soft tubing appears to be stained from dye. The plasticizer that begins to leech from the tube is exposed to dye and retains the color. If you are using quality tubing like Advanced LRT or Mayhems and are still seeing plasticizer, it is because your fluid temps are too high in your loop. Try to keep your fluid temps below 45C. High fluid temps accelerate the rate that plasticizer leaches and clouds tubing. Mayhems actually conducted a test to verify these things and those were his results. I'll see if I can find the thread.
When I think about it you are probably right. Although it may have been junk in the rad. Dont recall ever letting coolant get that hot. But based on my PPCs invoices it turns out I may have been using advanced LRT at the time and XT-1 and Blue Dye. For whatever reason the coolant went from a really vivid blue to a murky green. Its possible I either loaded it up with far too much dye, did not flush the rad enough as this was before Blitz existed or at least I knew about it (2013), or I improperly mixed the concentrate. Whatever happened it clogged up my blocks and stained the tubes and res. I switched to Pastel White premix and Blitzing for every flush. Had not had an issue since. Sorry for the probably contradicting info but my memory of the chain of events is a bit off. All I know is it was slightly rocky from the start but it really may have been bad res prep.
Pick your dye carefully though and be prepared to stick with that color. Took two cycles of pastel before it stopped getting blue tint from what I assume was dye stuck in the rads. I think Blitz helps a ton to eliminate that but I was only running the dye for maybe a bit under 2 years.
My the LRT does not appear to leech, but after 8-12 months of use the tubing does start to shift to a yellow color. Not noticeable until I take the loop apart for cleaning. Not sure if this contributed to my initial gunk problem or not.Edited by devsfan1830 - 7/13/16 at 10:18am